Wind turbine



FIG. 1 is a front perspective view of a wind turbine showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front perspective view thereof, shown in an environment of use.

The broken lines represent the portions of the wind turbine that form no part of the claimed design. 

CLAIM The ornamental design for a wind turbine, as shown and described. 